Sharp CX68KF5 User manual

1
CX68KF5
SX68KF7
WARNING
The chassis in this receiver is partially hot. Use an isolation transformer between the line cord plug and power
receptacle, when servicing this chassis. To prevent electric shock, do not remove cover. No user – serviceable
parts inside. Refer servicing to qualified service personnel.
SERVICE MANUAL
SY0M8CX68KF5/
In the interests of user-safety (Required by safety regulations in some countries) the set should be restored
to its original condition and only parts identical to those specified should be used.
MODELS CX68KF5
SX68KF7
SHARP CORPORATION
COLOUR TELEVISION
Chassis No. NFC
Page
CONTENTS
»SPECIFICATIONS .............................................2
»IMPORTANT SERVICE NOTES........................2
»ADJUSTMENT PRECAUTIONS........................3
»TROUBLE SHOOTING TABLE .......................16
»CHASSIS LAYOUT..........................................21
»BLOCK DIAGRAM...........................................22
»WAVEFORMS..................................................35
»DESCRIPTION OF SCHEMATIC DIAGRAM ..36
»SCHEMATIC DIAGRAM
ËCRT UNIT.....................................................37
ËMAIN UNIT (CX68KF5)................................38
ËMAIN UNIT (SX68KF7) ................................42
ËPOWER UNIT ..............................................46
ËOPERATION UNIT .......................................48
Page
ËIGR UNIT......................................................49
»PRINTED WIRING BOARD ASSEMBLIES.....50
»SOLID STATE DEVICE BASE DIAGRAM.......58
»REPLACEMENT PARTS LIST
ËELECTRICAL PARTS
MAIN UNIT ...................................................59
POWER UNIT ..............................................64
CRT UNIT.....................................................67
IGR UNIT (SX68KF7)...................................67
OPERATION UNIT .......................................68
ËSUPPLIED ACCESSORIES.........................69
ËPACKING PARTS.........................................69
ËCABINET PARTS .........................................69
FEATURES
Ë100 CH Program Memory
ËAV Mode (Standard/ Dynamic/ Soft)
ËCATV Hyper Band Ready
ËPAL/NTSC 3line Comb Filter
ËON/OFF Velocity Modulation
ËBlack Stretch Circuit
ËPicture Noise Reduction
ËWhite Temp. Select
ËAperture Control
ËIGR-B/G (Only SX68KF7)
ËBass+
ËMulti Language (English/Chinese/Russian/French/
Malay/Arabic)
ËON/OFF Reminder Timer
ËPower Save Mode
ËRear AV-In 1 & 2, S-Video In,AV Output
(Monitor Out), Headphone and Front AV-In 3

2
2-1 2-2
CX68KF5
SX68KF7
SPECIFICATIONS
Power Input .......................................................................................AC 220 - 240V, 50 Hz
Power Consumption ............................................................................... 158 W (CX68KF5)
163 W (SX68KF7)
Convergence ..............................................................................Self Convergence System
Focus ..................................................................... Bi-Potential, Uni-Potential Electrostatic
Sweep Deflection................................................................................................... Magnetic
Intermediate Frequency
Picture IF Carrier ............................................................................................... 38.9 MHz
Sound IF Carrier
5.5 MHz .......................................................................................................... 33.4 MHz
Colour Sub-Carrier
PAL ............................................................................................................... 34.47 MHz
Audio Power Output Rating.......................................................................... 10W ×2 (Max)
Speaker
Size ......................................................................................................12 ×8 cm ×2 pcs.
Aerial Input Inpedance ........................................................................ 75 ohm Unbalanced
Receiving Channels
PAL-B/G
VHF .......................................................................................................E2 thru E12
UHF .....................................................................................................E21 thru E69
CATV .......................................................................................................X thru Z + 2,
S1 thru S41
Receiving Frequency
VHF ......................................................................................44.25 MHz thru 423.25 MHz
UHF....................................................................................431.25 MHz thru 863.25 MHz
Dimensions ...............................................................................................Width : 800 mm
Height : 583 mm
Depth : 512 mm
Weight (Approx) : 47.0 kg
Specifications are subject to change without prior notice.
IMPORTANT SERVICE NOTES
Maintenance and repair of this receiver should be done by
qualified service personnel only.
SERVICE OF HIGH VOLTAGE SYSTEM AND
PICTURE TUBE
When servicing the high voltage system, remove static charge from it by
connecting a 10k ohm Resistor in series with an insulated wire (such as a
test probe) between picture tube dag and 2nd anode lead. (AC line cord
should be disconnected from AC outlet.)
1. Picture tube in this receiver employs integral implosion protection.
2. Replace with tube of the same type number for continued safety.
3. Do not lift picture tube by the neck.
4. Handle the picture tube only when wearing shatterproof goggles and after
discharging the high voltage completely
X-RAY
This receiver is designed so that any X-Ray radiation is kept to an absolute
minimum. Since certain malfunctions or servicing may produce potentially
hazardous radiation with prolonged exposure at close range, the following
precautions should be observed:
1. When repairing the circuit, be sure not to increase the high voltage to more
than 34.0 kV (at beam 0 µA) for the set.
2. To keep the set in a normal operation, be sure to make it function on 30.0 ±1.5
kV (at beam 1,800 µA) in the case of the set. The set has been factory –Adjusted
to the above-mentioned high voltage.
If there is a possibility that the high voltage fluctuates as a result of the
repairs, never forget to check for such high voltage after the work.
3. Do not substitute a picture tube with unauthorized types and/or brands
which may cause excess X-ray radiation.
BEFORE RETURNING THE RECEIVER
Before returning the receiver to the user, perform the following safety checks.
1. Inspect all lead dress to make certain that leads are not pinched or that
hardware is not lodged between the chassis and other metal parts in the
receiver.
2. Inspect all protective devices such as non-metallic control knobs, insulating
fishpapers, cabinet backs, adjustment and compartment covers or shields,
isolation resistor-capacity networks, mechanical insulators and etc.

3
CX68KF5
SX68KF7
3-1 3-2
ADJUSTMENT PRECAUTIONS
This model’s setting are adjusted in two different ways: through the I2C bus control and in the
conventional analog manner. The adjustments via the I2C bus control include preset-only items
and variable data.
1. Setting the service mode by the microprocessor.
1Make a short-circuit JA373 and JA374, enter into the service mode. (Adjustment through
the I2C bus control). (Use JWS Key to set as well).
2Press the CH DOWN / UP key on the remote controller to get ready to select the mode
one by one.
3Press the CH DOWN / UP key on the remote controller to select the modes reversibly
one by one.
4Using the VOLUME UP/ DOWN key on the remote controller, the data can be modified.
5When the short circuit between JA373 and JA374 is cut off, it will be released from the
service mode.
2. Factory Presetting.
1Make a short-circuit JA373 and JA374 and turn on the main power switch. Initial values
are automatically preset, only when a new EEPROM is used (Judge with the first 4
bytes).
2The initial data are preset as listed in page.
3Make sure the data need modify or not (Initial data).
Note: Once the chassis has been assembly together and ready to be POWER ON for the
FIRST TIME, make sure to make a short-circuit JA373 and JA374 to switch to the
service mode position first and then turn on the main power switch. (See 2-1 above).
Precaution: If haven’t done this initiation, it may possibly generate excessive Beam
current.
SERVICE MODE
RASTER
MODE
Press the MENU button
at the remote controller,
it will enter into
Service Mode Option.
Press the MENU button
again at the remote controller,
it will jump back to
Service Mode 1.
Press service/ language for 2 sec,
it will enter into service mode 2.
Press service/ language for 2 sec again,
it will jump back to service mode 1.
FORWARD : CH DOWN KEY
REVERSE : CH UP KEY
R-CUT OFF
G-CUT OFF
B-CUT OFF
KEY
R-CUT OFF
G-CUT OFF
B-CUT OFF
G-DRIVE
B-DRIVE
UP
1 KEY
2 KEY
3 KEY
7 KEY
8 KEY
DOWN
4 KEY
5 KEY
6 KEY
F/B KEY
0 KEY
3 sec.TIME OUT
CUT OFF
MODE
SERVICE MODE 1
1.) In the Service Mode, Key is used to select the mode in the following order.
CUT OFF/ BKGD MODE
50Hz ADJ.
MODE
SERVICE MODE 2
SUB 2 ADJ.
MODE
SERVICE MODE
OPTION
60 Hz ADJ.
MODE SUB 1 ADJ. MODE
CUT OFF
BKGD
MODE
LATERAL MODE
(R, G, B-CUT OFF)
G-DRIVE
B-DRIVE
3 sec.TIME OUT
DATA
LENGTH
DRIVE
"–/––"INITIAL
DATA
0 - 127 63
DATA
LENGTH
CUT OFF
INITIAL
DATA
63 - 255 63

4
4-1 4-2
CX68KF5
SX68KF7
FORWARD : CH DOWN KEY
REVERSE : CH UP KEY
V-SIZE 50 Hz (V-SIZE 50)
V-LINEARITY 50 Hz (V-LINE 50)
VS-CORRECTION 50 Hz (VS-CORR 50)
V-POSITION 50 Hz (V-CENT 50)
50 Hz ADJ. MODE
TRAPEZIUM 50 Hz (TRAPE 50)
E/W CORNER 50 Hz (E/W COR 50)
E/W PARABOLA 50 Hz (E/W PAR 50)
H-SIZE 50 Hz (H-SIZE 50)
H-POSITION 50 Hz (H-CENT 50)
V-SIZE 60 Hz (V-SIZE 60)
V-LINEARITY 60 Hz (V-LINE 60)
VS-CORRECTION 60 Hz (VS-CORR 60)
V-POSITION 60 Hz (V-CENT 60)
60 Hz ADJ. MODE
SECAM R-Y (SCM R-Y)
SECAM B-Y (SCM B-Y)
BRIGHT (SUB BRI)
BRIGHT (DVD) (SUB BRI DVD)
SUB CONT (SUB CONT)
SUB CONT (DVD) (SUB CONT DVD)
SUB TINT (SUB TINT)
SUB TINT(DVD) (SUB TINT DVD)
SUB 1
TRAPEZIUM 60 Hz (TRAPE 60)
E/W CORNER 60 Hz (E/W COR 60)
E/W PARABOLA 60 Hz (E/W PAR 60)
H-SIZE 60 Hz (H-SIZE 60)
H-POSITION 60 Hz (H-CENT 60)
SUB COLOR (SUB COLOR)
SUB COLOR (DVD) (SUB COLOR DVD)
V-ENT (V-ENT)
H-ENT (H-ENT)
RF AGC (RF AGC)
SECAM BELL (SCM BELL)
SPRIT/INTER (S/I)
RF SUB SOUND (RF S-SOUND)
HEADPHONE (HP SUB VOL)
SUB VOLUME ADJ.
COLOR TEMP. (WT)
PIFVCO (PIFVCO)
LNA (LNA)
SUB 2
User Data in Service Mode Option
•While SERVICE MODE 1 on, EEPROM DATAwill switch to the service data.
Also, once press the menu button at the remote controller, EEPROM will switch
to SERVICE MODE OPTION.
Once press the menu button again at the remote controller, EEPROM will switch
back to SERVICE MODE 1.
•In the service option the user data establish as below,
Service Mode Option
No. EEPROM ITEM DATA LENGTH OSD IC DATA SETTING INITIAL
DATA
1 COMB OPTION ON/OFF COMB OP OPTION ON
2 DVD OPTION ON/OFF DVD OP OPTION ON
3 PAL OPTION ON/OFF PAL OP OPTION ON
4 6.5 M SIF FIX 0 ~ 1 6.5 M 1 CHIP 6.5 M SIF FIX (0) 0
5 ROTATION OPTION ON/OFF ROTA OP OPTION OFF
6 SYAKIT OPTION ON/OFF SYAKIT OP OPTION OFF
7 SPATIALIZER OPTION ON/OFF SPA OP OPTION OFF
8 FLAT OPTION ON/OFF FLAT OP OPTION (ON:FLAT) ON
9 SPEAKER 1 ~ 4 SPEAKER OPTION SP1 (1) 3
10 HOTEL ON/OFF ON/OFF H MODE OPTION OFF
11 HOTEL POSITION 0 ~ 99 H POSITION OPTION 0
12 HOTEL VOLUME 0 ~ 60 H VOLUME OPTION 0
SERVICE MODE

5
CX68KF5
SX68KF7
5-1 5-2
After short JA373 & JA374, and turn on the main power switch, read data from EEPROM Address
00H ~ 03H, and compare to the list below, if different, initialize the EEPROM.
Address Data Address Data
00H 23H 02H 18H
01H 23H 03H A3H
1. SERVICE MODE 1
No. EEPROM SETTING DATA LENGTH OSD IC DATA SETTING INITIAL
DATA
0 MICOM INFO. DISPLAY SERVICE MODE
1 CUT OFF REFER # CUTOFF BKGD
2 CUT OFF (DVD) REFER # CUTOFFBKGD (DVD)
3 V-SIZE 0 ~ 63 V-SIZE 50 1 CHIP V-SIZE 30
4 V-LINEARITY (50Hz) #2 0 ~ 15 V S-LINE 50 1 CHIP V-LINEARITY 10
5 VS-CORRECTION (50Hz) #2 0 ~ 15 V S-CORR 50 1 CHIP V S-CORRECTION 8
6 V-POSITION #2 0 ~ 7 V-CENT 50 1 CHIP V-PHASE 5
7 H-POSITION #2 0 ~ 31 H-CENT 50 1 CHIP H-PHASE 11
8 H-SIZE (50Hz) #2 0 ~ 63 H-SIZE 50 1 CHIP H-SIZE 32
9 E/W-PARABOLA(50Hz) #2 0 ~ 63 E/W PAR 50 1 CHIP E/W PARABORA 39
10 E/W CORNER (50Hz) #2 0 ~ 15 E/W COR 50 1 CHIP E/W CORNER 6
11 TRAPEZIUM (50Hz) #2 0 ~ 31 TRAPE 50 1 CHIP TRAPEZIUM 17
12 SECAM R-Y #3 0 ~ 15 SCM R-Y 1 CHIP SR-Y 8
13 SECAM B-Y #3 0 ~ 15 SCM B-Y 1 CHIP SB-Y 8
14 BRIGHT 0 ~ 127 SUB BRI 1 CHIP BRIGHTNESS 80
15 BRIGHT (DVD) 0 ~ 127 SUB BRI DVD 1 CHIP BRIGHTNESS 80
16 SUB CONT 0 ~ 15 SUB CONT 1 CHIP SUB CONT 3
17 SUB CONT (DVD) 0 ~ 15 SUB CONT DVD 1 CHIP SUB XONT 3
18 TINT 0 ~ 127 SUB TINT 1 CHIP TINT 64
19 TINT (DVD) 0 ~ 127 SUB TINT DVD 1 CHIP TINT 16
20 V-SIZE 0 ~ 63 V-SIZE 60 1 CHIP V-SIZE 39
21 V-LINEARITY 0 ~ 15 V-LINE 60 1 CHIP V-LINEARITY 10
22 VS-CORRECTION (60Hz) 0 ~ 15 V S-CORR 60 1 CHIP V S-CORRECTION 9
23 V-POSITION (60Hz) 0 ~ 7 V-CENT 60 1 CHIP V-PHASE 2
24 H-POSITION (60Hz) 0 ~ 31 H-CENT 60 1 CHIP H-PHASE 14
25 H-SIZE (60Hz) 0 ~ 63 H-SIZE 60 1 CHIP H-SIZE 34
26 E/W PARABOLA(60Hz) 0 ~ 63 E/W PAR 60 1 CHIP E/W PARABORA 19
27 E/W CORNER (60Hz) 0 ~ 15 E/W COT 60 1 CHIP E/W CORNER 4
28 TRAPEZIUM (60Hz) 0 ~ 31 TRAPE 60 1 CHIP TRAPEZIUM 6
29 COLOUR 0 ~ 127 SUB COL 1 CHIP COLOUR 60
30 COLOUR (DVD) 0 ~ 127 CUB COL DVD 1 CHIP COLOUR 60
31 V-ENT 0 ~ 7 V-ENT 1 CHIP V-ENT 6
32 H-ENT 0 ~ 7 H-ENT 1 CHIP H-ENT 4
33 RF AGC 0 ~ 63 RF AGC 1 CHIP RF AGC 46
34 SECAM BELL 0 ~ 1 SCM BELL 1 CHIP S BELL 0
35 SPRIT/INTER 0 ~ 1 S/I 1 CHIP SPRIT/INTER 0
36 RF SUB SOUND 0 ~ 127 RF S-SOUND 1 CHIP RF SUB SOUND 96
37 SUB VOLUME 0 ~ 63 SUB VOL SOR/SPA VOLUME 45
38 H. PHONE SUB VOL.ADJ. 0 ~ 63 HP SUB VOL SOR/SPA VOLUME 63
39 COLOUR TEMP. 0 ~ 1 WT OPTION Russia:0, Other:1 1
40 PIF VCO #4 PIFVCO -
41 LNA ON/OFF LNA OPTION OFF
2. SERVICE MODE 2
NO. EEPROM ITEM DATA LENGTH OSD IC DATA SETTING INITIAL
DATA
1 WPS 0 ~ 1 WPS 1 CHIP WPS 1
2 SUB CONTRAST 0 ~ 127 S CONT 1 CHIP CONTRAST 127
3 NTSC PHASE (NT) 0 ~ 3 N-PNT 1 CHIP NTSC PHASE 0
4 NTSC PHASE (PAL/SEC.) 0 ~ 3 N-P PS 1 CHIP NTSC PHASE 0
5 NTSC PHASE (DVD) 0 ~ 3 N-PD 1 CHIP NTSC PHASE 3
6 SUB SHARPNESS (TV) 0 ~ 63 S SHARP T 1 CHIP SHARPNESS 32
7 SUB SHARPNESS (AV) 0 ~ 63 S SHARP A 1 CHIP SHARPNESS 20
8 SUB SHARPNESS (DVD) 0 ~ 63 S SHARP D 1 CHIP SHARPNESS 10
9 RGB MUTE 0 ~ 1 RGB MUTE 1 CHIP RGB MUTE OFF
10 RGB CONTRAST 0 ~ 63 RGB CONT 1 CHIP RGB CONTRAST 32
11 Y-DL (NTSC-M) 0 ~ 3 YNM 1 CHIP Y-DL 1
12 Y-DL (PAL-B/G) 0 ~ 3 YPB 1 CHIP Y-DL 1
13 Y-DL (PAL-I) 0 ~ 3 YPI 1 CHIP Y-DL 3
14 Y-DL (PAL-D/K) 0 ~ 3 YPD 1 CHIP Y-DL 3
15 Y-DL (SECAM-B/G) 0 ~ 3 YSB 1 CHIP Y-DL 0
16 Y-DL (SECAM-D/K) 0 ~ 3 YSD 1 CHIP Y-DL 3
17 Y-DL (B/W) 0 ~ 3 YBW 1 CHIP Y-DL 0
18 Y-DL (NTSC-AV) 0 ~ 3 YNA 1 CHIP Y-DL 0
19 Y-DL (PAL-AV) 0 ~ 3 YPA 1 CHIP Y-DL 0
20 Y-DL (SECAM-AV) 0 ~ 3 YSA 1 CHIP Y-DL 0
21 Y-DL (B/W-AV) 0 ~ 3 YBA 1 CHIP Y-DL 0
22 SUB COLOUR 0 ~ 31 SUB COL 1 CHIP SUB-COLOUR 16
23 VSM GAIN AVM1 0 ~ 7 V-GAIN 1 1 CHIP VSM GAIN 3
24 VSM GAIN AVM2 0 ~ 7 V-GAIN 2 1 CHIP VSM GAIN 5
25 VSM GAIN AVM3 0 ~ 7 V-GAIN 3 1 CHIP VSM GAIN 7
26 BASE BAND TINT 0 ~ 31 B-B TINT 1 CHIP BASE BAND TINT
27 SECAM GP-PHASE 0 ~ 3 S G-PHASE 1 CHIP S SP-PHASE 1
28 SECAM ID-SENS 0 ~ 1 S ID-SENS 1 CHIP S ID-SENS 0
29 SECAM ID-MODE 0 ~ 1 S ID-MODE 1 CHIP S ID-MODE 0
30 PIF FREQ 0 ~ 7 P FREQ 1 CHIP PIF FREQ 3
31 P/N-ID 0 ~ 1 PN ID 1 CHIP P/N-ID 0
32 YS/YM MODE 0 ~ 1 YSM MODE 1 CHIP YSM MODE 1
33 RGB ABCL 0 ~ 1 RGB ABCL 1 CHIP RGBABCL 1
34 DC RESTORATION 0 ~ 3 DC REST 1 CHIP DC RESTORATION 3
35 BLACK STRETCH 0 ~ 3 B ST 1 CHIP BLACK STRETCH 1
36 ABL START POINT 0 ~ 3 ABL ST 1 CHIP ABL START POINT 3
37 ABL GAIN 0 ~ 3 ABL GA 1 CHIP ABL GAIN 2
38 AKB MODE 0 ~ 63 AKB MODE 1 CHIP AKB MODE 0
39 COLOUR 0 ~ 1 COL G 1 CHIP COLOUR 1
40 V AGC 0 ~ 1 V AGC 1 CHIP V AGC 0
41 V RAMP REF 0 ~ 1 V RAMP 1 CHIP V RAMP 1
42 VSM PHASE 0 ~ 1 VSM PHASE 1 CHIP VSM PHASE 1
43 BASS LEVEL ON 0 ~ 3 BA LV SUR/SPA BASS LEVEL 3
44 BASS OFF AVM1 SP1 0 ~ 4 #1 BA OFF 1 SP1 SUR/SPA BASS SW, LEVEL 4
45 BASS OFF AVM2 SP1 0 ~ 4 #1 BA OFF 2 SP1 SUR/SPA BASS SW, LEVEL 4
46 BASS OFF AVM3 SP1 0 ~ 4 #1 BA OFF 3 SP1 SUR/SPA BASS SW, LEVEL 4
47 BASS OFF AVM1 SP2 0 ~ 4 #1 BA OFF 1 SP2 SUR/SPA BASS SW, LEVEL 4
48 BASS OFF AVM2 SP2 0 ~ 4 #1 BA OFF 2 SP2 SUR/SPA BASS SW, LEVEL 4
49 BASS OFF AVM3 SP2 0 ~ 4 #1 BA OFF 3 SP2 SUR/SPA BASS SW, LEVEL 4
50 BASS OFF AVM1 SP3 0 ~ 4 #1 BA OFF 1 SP3 SUR/SPA BASS SW, LEVEL 4
51 BASS OFF AVM2 SP3 0 ~ 4 #1 BA OFF 2 SP3 SUR/SPA BASS SW, LEVEL 4
52 BASS OFF AVM3 SP3 0 ~ 4 #1 BA OFF 3 SP3 SUR/SPA BASS SW, LEVEL 4
53 BASS OFF AVM1 SP4 0 ~ 4 #1 BA OFF 1 SP4 SUR/SPA BASS SW, LEVEL 4
54 BASS OFF AVM2 SP4 0 ~ 4 #1 BA OFF 2 SP4 SUR/SPA BASS SW, LEVEL 4
#1 While selecting SERVICE MODE 1, MICOM Version Information, SOFTWARE Version Information,
check some iformation will be displayed.
#2. 60 Hz Adjustment Value is programmed from ± 50 HzAdjustment value (± will be informed later)
#3 While adjusting SECAM R-Y, SECAM B-Y and S BLACK of 1 chip is set to 1.
#4 While choosing PIFVCO MODE and RF AGC set to "0 0" and PIFVCO is set to "1".

6
6-1 6-2
CX68KF5
SX68KF7
NO. EEPROM ITEM DATA LENGTH OSD IC DATA SETTING INITIAL
DATA
111 TREBLEAVM2 SP2 #6 TRE 2 SP2 +2
112 TREBLEAVM3 SP2 #6 TRE 3 SP2 +8
113 TREBLEAVM1 SP3 #6 TRE 1 SP3 -10
114 TREBLEAVM2 SP3 #6 TRE 2 SP3 +1
115 TREBLEAVM3 SP3 #6 TRE 3 SP3 +5
116 TREBLEAVM1 SP4 #6 TRE 1 SP4 -10
117 TREBLEAVM2 SP4 #6 TRE 2 SP4 +3
118 TREBLEAVM3 SP4 #6 TRE 3 SP4 +5
119 BASS MODEAVM1 SP1 ON/OFF #7 BA MO 1 SP1 OFF
120 BASS MODE AVM2 SP1 ON/OFF #7 BA MO 2 SP1 OFF
121 BASS MODE AVM3 SP1 ON/OFF #7 BA MO 3 SP1 ON
122 BASS MODE AVM1 SP2 ON/OFF #7 BA MO 1 SP2 OFF
123 BASS MODE AVM2 SP2 ON/OFF #7 BA MO 2 SP2 OFF
124 BASS MODE AVM3 SP2 ON/OFF #7 BA MO 3 SP2 ON
125 BASS MODE AVM1 SP3 ON/OFF #7 BA MO 1 SP3 OFF
126 BASS MODE AVM2 SP3 ON/OFF #7 BA MO 2 SP3 OFF
127 BASS MODE AVM3 SP3 ON/OFF #7 BA MO 3 SP3 ON
128 BASS MODE AVM1 SP4 ON/OFF #7 BA MO 1 SP4 OFF
129 BASS MODE AVM2 SP4 ON/OFF #7 BA MO 2 SP4 OFF
130 BASS MODE AVM3 SP4 ON/OFF #7 BA MO 3 SP4 ON
131 CONTRAST AVM1 #8 CONT 1 55
132 CONTRAST AVM2 #8 CONT 2 57
133 CONTRAST AVM3 #8 CONT 3 60
134 CONTRAST AVM1 FL #8 CONT 1 FL 55
135 CONTRAST AVM2 FL #8 CONT 2 FL 57
136 CONTRAST AVM3 FL #8 CONT 3 FL 60
137 COLOUR AVM1 #9 COL 1 0
138 COLOUR AVM2 #9 COL 2 0
139 COLOUR AVM3 #9 COL 3 10
140 COLOUR AVM1 FL #9 COL 1 FL 0
141 COLOUR AVM2 FL #9 COL 2 FL 0
142 COLOUR AVM3 FL #9 COL 3 FL 10
143 SHARP AVM1 #10 SHARP 1 -5
144 SHARP AVM2 #10 SHARP 2 0
145 SHARP AVM3 #10 SHARP 3 0
146 SHARP AVM1 FL #10 SHARP 1 FL -5
147 SHARP AVM2 FL #10 SHARP 2 FL 0
148 SHARP AVM3 FL #10 SHARP 3 FL 0
149 γ- POINTAVM1 #11 G-POINT 1 3
150 γ- POINTAVM2 #11 G-POINT 2 2
151 γ- POINTAVM3 #11 G-POINT 3 1
152 γ- POINTAVM1 FL #11 G-POINT 1 FL 3
153 γ- POINTAVM2 FL #11 G-POINT 2 FL 2
154 γ- POINTAVM3 FL #11 G-POINT 3 FL 1
155 SEARCH SPEED #12 S SPE 450
156 OSD 0 ~ 127 OSD-H 2
157 BUZZ 0 ~ 1 BUZZ 1 CHIP BUZZ 0
158 AV AFC 0 ~ 1 AV AFC 1
159 TEXT H 0 ~ 63 TEXT H TEXT 34
160 TEXT V 0 ~ 63 TEXT V TEXT 35
161 NVM NVM EEPROM
NO. EEPROM ITEM DATA LENGTH OSD IC DATA SETTING INITIAL
DATA
55 BASS OFF AVM3 SP4 0 ~ 4 #1 BA OFF 3 SP4 SUR/SPA BASS SW, LEVEL 4
56 AGC SW 0 ~ 1 AGC SW SUR/SPA AGC SW ON
57 AGC ADJ 0 ~ 3 AGC AD SUR/SPA AGC ADJ 2
58 FM LEVEL #2 FM L NICAM FM LEVEL +1
59 IGR LEVEL #2 IGR L NICAM IGR LEVEL +2
60 NICAM B/G LEVEL #3 BG L NICAM NICAM B/G LEVEL -1
61 NICAM 1 LEVEL #3 I L NICAM NICAM I LEVEL +4
62 NICAL D/K LEVEL #3 DK L NICAM NICAM D/K LEVEL -1
63 LOWER ERROR 0 ~ 255 L ERR NICAM LOWER ERROR 35
64 UPPER ERROR 0 ~ 255 U ERR NICAM UPPER ERROR 70
65 IGR GAIN (9873H) #4 IGR G NICAM IGR GAIN (9873H) 0
66 NICAM SPEED 0 ~ 3 N SPE NICAM N SPEED 2
67 INTER/EXTER 0 ~ 1 IN/EX NICAM INTER/EXTER 0
68 AUTO MUTE 0 ~ 1 AM NICAM AUTO MUTE OFF
69 AGC SW ON/OFF 0 ~ 1 AGC SW NICAM AGC SW OFF
70 AGC GAIN 0 ~ 31 AGC G NICAM AGC GAIN 16
71 SYAKIT VOLUME 1 0 ~ 21 SVOL 1 SYAKIT SVOLUME 1 0
72 SYAKIT VOLUME 2 0 ~ 3 SVOL 2 SYAKIT SVOLUME 2 0
73 SYAKIT LOU 0 ~ 1 SLOT SYAKIT SLOU 1
74 SYAKITATT 0 ~ 7 SATT SYAKIT SATT OUT 0
75 SYAKIT BASS 0 ~ 13 SBASS SYAKIT S-BASS 6
76 SYAKIT TREBLE 0 ~ 13 STRE SYAKIT S-TREBLE 6
77 MAX LEVEL SYAKIT 1 0 ~ 5 S1MA 3
78 MAX LEVEL SYAKIT 2 0 ~ 5 S2MA 4
79 MAX LEVEL SYAKIT 3 0 ~ 5 S3MA 6
80 START LEVEL SYAKIT 1 0 ~ 63 S1ST 17
81 START LEVEL SYAKIT 2 0 ~ 63 S2ST 21
82 START LEVEL SYAKIT 3 0 ~ 63 S3ST 20
83 WIDE LEVEL SYAKIT 1 0 ~ 7 S1W1 6
84 WIDE LEVEL SYAKIT 2 0 ~ 7 S2W1 3
85 WIDE LEVEL SYAKIT 3 0 ~ 7 S3W1 3
86 STOP LEVEL SYAKIT 1 0 ~ 5 S1SP 1
87 STOP LEVEL SYAKIT 2 0 ~ 5 S2SP 1
88 STOP LEVEL SYAKIT 3 0 ~ 5 S3SP 1
89 BASS MAX SYAKIT 1 0 ~ 15 SBASS1 12
90 BASS MAX SYAKIT 2 0 ~ 15 SBASS2 11
91 BASS MAX SYAKIT 3 0 ~ 15 SBASS3 10
92 TREBLE MAX SYAKIT 1 0 ~ 15 STRE1 12
93 TREBLE MAX SYAKIT 2 0 ~ 15 STRE2 11
94 TREBLE MAX SYAKIT 3 0 ~ 15 STRE3 10
95 BASS AVM1 SP1 #6 BASS 1 SP1 -5
96 BASS AVM2 SP1 #6 BASS 2 SP1 +2
97 BASS AVM3 SP1 #6 BASS 3 SP1 +5
98 BASS AVM1 SP2 #6 BASS 1 SP2 -5
99 BASS AVM2 SP2 #6 BASS 2 SP2 0
100 BASS AVM3 SP2 #6 BASS 3 SP2 +5
101 BASS AVM1 SP3 #6 BASS 1 SP3 -5
102 BASS AVM2 SP3 #6 BASS 2 SP3 0
103 BASS AVM3 SP3 #6 BASS 3 SP3 +10
104 BASS AVM1 SP4 #6 BASS 1 SP4 -5
105 BASS AVM2 SP4 #6 BASS 2 SP4 -2
106 BASS AVM3 SP4 #6 BASS 3 SP4 +10
107 TREBLE AVM1 SP1 #6 TRE 1 SP1 -5
108 TREBLE AVM2 SP1 #6 TRE 2 SP1 0
109 TREBLE AVM3 SP1 #6 TRE 3 SP1 +5
110 TREBLEAVM1 SP2 #6 TRE 1 SP2 -5

7
CX68KF5
SX68KF7
7-1 7-2
SREC/SRAC/SYI/STTM SREC-SCA (SKD)
R/C CODE MCL 1 (R/C CODE 117h) MCL 2 (R/C CODE 169h)
TV-CH. CH-No. Fv (MHz) S-SYSTEM CH-No. Fv (MHz) S-SYSTEM
52 SKIP OFF FREE E-37 599.25 5.5 B/G
53 SKIP OFF FREE JPN-38 621.25 4.5 M
54 SKIP OFF FREE OI-42 639.25
55 SKIP OFF FREE I-54 735.25 6.0 I
56 SKIP OFF FREE E-58 767.25 5.5 B/G
57 SKIP OFF FREE E-64 815.25 5.5 B/G
58 SKIP OFF FREE I-69 855.25 6.0 I
59 SKIP OFF FREE JA-1 91.25 4.5 M
60 SKIP OFF FREE JA-6 183.25 4.5 M
61 SKIP OFF FREE JA-8 193.25 4.5 M
62 SKIP OFF FREE JA-12 217.25 4.5 M
63 SKIP OFF FREE US-14 471.25 4.5 M
64 SKIP OFF FREE JA-50 693.25 4.5 M
65 SKIP OFF FREE S-2 112.25 5.5 B/G
66 SKIP OFF FREE S-10 168.25 5.5 B/G
67 SKIP OFF FREE S-20 294.25 5.5 B/G
68 SKIP OFF FREE S-41 463.25 5.5 B/G
69 SKIP OFF FREE E-5 174.95 5.5 B/G
70 SKIP OFF FREE E-5 175.55 5.5 B/G
71 SKIP OFF FREE SKIP OFF FREE
99 SKIP OFF FREE SKIP OFF FREE
~
~
~
INITIAL SETTING
(1) Execute MCL 1/2 key to set the following data in EEPROM.
SREC/SRAC/SYI/STTM SREC-SCA (SKD)
R/C CODE MCL 1 (R/C CODE 117h) MCL 2 (R/C CODE 169h)
TV-CH. CH-No. Fv (MHz) S-SYSTEM CH-No. Fv (MHz) S-SYSTEM
0 SKIP OFF FREE 590.25 5.5 B/G
1 E-2 48.25 5.5 B/G AU-0 46.25 5.5 B/G
2 E-4/B-3 62.25 5.5 B/G AU-2 64.25 5.5 B/G
3 OIR-3 77.25 6.5 D/K AU-3 86.25 5.5 B/G
4 E-5 175.25 5.5 B/G AU-4 95.25 5.5 B/G
5 E-6/B-5 182.25 5.5 B/G AU-5A 138.25 5.5 B/G
6 OIR-7 183.25 6.5 D/K AU-6 175.25 5.5 B/G
7 OIR-8 191.25 6.5 D/K AU-7 182.25 5.5 B/G
8 E-8/B-7 196.25 5.5 B/G AU-8 189.25 5.5 B/G
9 J-9 199.25 4.5 M AU-9 196.25 5.5 B/G
10 E-10/B-9 210.25 5.5 B/G AU-10 209.25 5.5 B/G
11 E-12/B-11 224.25 5.5 B/G AU-11 216.25 5.5 B/G
12 E-21 471.25 5.5 B/G SKIP OFF FREE
13 I-23 487.25 6.0 I SKIP OFF FREE
14 E-25 503.25 5.5 B/G SKIP OFF FREE
15 E-34 575.25 5.5 B/G SKIP OFF FREE
16 E-35 583.25 5.5 B/G SKIP OFF FREE
17 E-37 599.25 5.5 B/G SKIP OFF FREE
18 J-38 621.25 4.5 M SKIP OFF FREE
19 OIR-42 639.25 6.5 D/K SKIP OFF FREE
20 B-50 703.25 5.5 B/G SKIP OFF FREE
21 I-54 735.25 6.0 I SKIP OFF FREE
22 E-58 767.25 5.5 B/G SKIP OFF FREE
23 E-64 815.25 5.5 B/G SKIP OFF FREE
24 I-69 855.25 6.0 I SKIP OFF FREE
25 E-69 855.25 5.5 B/G SKIP OFF FREE
26 US-2 55.25 4.5 M SKIP OFF FREE
27 A-6 83.25 4.5 M SKIP OFF FREE
28 JA-6 183.25 4.5 M WE-28 527.25 5.5 B/G
29 JA-8 193.25 4.5 M SKIP OFF FREE
30 JA-12 217.25 4.5 M SKIP OFF FREE
31 US-14 471.25 4.5 M SKIP OFF FREE
32 JA-14 477.25 4.5 M SKIP OFF FREE
33 JA-50 693.25 4.5 M SKIP OFF FREE
34 US-83 885.25 4.5 M SKIP OFF FREE
35 S-2 112.25 5.5 B/G SKIP OFF FREE
36 S-10 168.25 5.5 B/G SKIP OFF FREE
37 SKIP OFF FREE AU-37 590.25 5.5 B/G
38 S-20 294.25 5.5 B/G SKIP OFF FREE
39 S-41 463.25 5.5 B/G SKIP OFF FREE
40 SKIP OFF FREE SKIP OFF FREE
41 B-43 647.25 5.5 B/G E-2 48.25 5.5 B/G
42 B-45 663.25 5.5 B/G E-4 62.25 5.5 B/G
43 B-47 679.25 5.5 B/G OI-3 77.25
44 E-5 174.95 5.5 B/G E-5 175.25 5.5 B/G
45 E-5 175.55 5.5 B/G OIR-7 183.25
46 SKIP OFF FREE OIR-8 191.25
47 SKIP OFF FREE E-10 210.25 5.5 B/G
48 SKIP OFF FREE E-12 224.25 5.5 B/G
49 SKIP OFF FREE I-23 487.25 6.0 I
50 SKIP OFF FREE E-25 503.25 5.5 B/G
51 SKIP OFF FREE E-34 575.25 5.5 B/G

8
8-1 8-2
CX68KF5
SX68KF7
SHIPPING SETTING AND CHECKING
(1) The following default data has been factory-set for the E2PROM.
ITEMS DATA SETTING
FACTORYSET 1 FACTORYSET 2 FACTORYSET 3 FACTORYSET 4
R/C 28(H) A8(H) E8(H) E9(H)
S-SYSTEM ALL CH D/K ALL CHI ALL CH B/G ALL CH B/G
LANGUAGE CHINESE CHINESE ENGLISH ARABIC
SELECT
MODE 1 2 3
SOFT STANDARD DYNAMIC
CONTRAST # # #
COLOR # # #
BRIGHT 0 0 0
TINT 0 0 0
SHARPNESS # # #
PICTURE NR OFF OFF OFF
WHITE TEMP 0 0 0
SHAKIT OFF OFF OFF
BASS + # # #
SOR/SPA OFF OFF OFF
LEVEL 0 0 0
BASS # 0 #
TREBLE # 0 #
# SERVICE MODE DATA
ITEM DATA SETTING
VM ON
TEXT 1
LNA OFF
ON TIMER IN ACTIVE
ON TIMER CH IN ACTIVE
ON TIMER VOLUME IN ACTIVE
REMINDER IN ACTIVE
AFT ALL CH ON
COLOUR SYSTEM ALL CH AUTO
SKIP ALL CH OFF
NICAM ON/OFF ALL CH ON
SICAM STEREO MODE ALL CH STEREO
NICAM BILINGUAL MODE ALL CH M1
NICAM MONO MODE ALL CH MONO
IGR ON/OFF ALL CH ON
IGR STEREO MODE ALL CH STEREO
IGR BILINGUAL MODE ALL CH MAIN
Model Magnetic Field (V.H) nT Background Lang. S-SYS
B 20,000 40,000 17,000°K CHINESE I
C (Singapore) -10,000 40,000 17,000°K ENGLISH B/G
F -10,000 40,000 17,000°K ENGLISH B/G
G 30,000 20,000 18,000°K ARABIC B/G
Australia -50,000 20,000 17,000°K ENGLISH B/G
No. Adjustment point Adjustment Condition / Procedure Waveform or others
1
2 RF-AGC
TAKE OVER
POINT
ADJUSTMENT
(I2C BUS
CONTROL)
1. Receive the PAL Colour bar signal.
Signal Strength: 54 ± 1dBµV (75Ωopen)
2. Connect the oscilloscope to TP201 (Tuner’s
AGC Terminal) as shown in Fig. 3.
3. Call "RF-AGC" mode in service mode.Adjust
the "RF-AGC" bus data to obtain the Tuner
output pin drop 0.1 ~ 1.0V below maximum
voltage.
4. Change the antenna input signal to 63 ~ 67
dBµV, and make sure there is no noise.
5. Turn up the input signal to 90 ~ 95dBµV to be
sure that there is no cross modulation beat.
Note:
For the 50Ω signal strength
gauge, when not using 50/75
impedance adapter, signal
strength is 52 ± 1dBµV (75Ω
open), instead of 54 ± 1dBµV
(75Ωopen).
precaution:
The loss of using impedance
adapter.
Tuner IFT
(PRESET)
TU200
1. Get the tuner ready to receive the CH. E-10
signal, but with no signal input.
Adjust the PLL data.
2. Connect the sweep generator’s output cable
to the tuner antenna. (RF SWEEP)
3. Adjust the sweep generator’s to 80dBµV.
4. Connect the response lead (use LOW
IMPEDANCE probe with wave detector ; see
Fig.1) to the tuner’s IF output terminal. (This
terminal must have the probe alone
connected).
5. Set the RF AGC to 0 - 6 V with no saturation
with the waveform.
6. Adjust the tuner IF coil to obtain the waveform
as shown in Fig. 2.
Note: Be sure to keep the tuner cover in position
during this adjustment.
#1 FACTORY-SET 8 OPERATE MCL2 #2 FACTORY-SET 8 only
ITEM DATA SETTING
LAST POWER ON
LAST TV/AV MODE TV
LAST CH CH1/CH2(#2)
FLASH BACK CH1
FAVORITE CH1 CH10
FAVORITE CH2 CH20
FAVORITE CH3 CH30
FAVORITE CH4 CH40
1 DIGIT/2 DIGIT 2 DIGIT
VOLUME 0
H/P-VOLUME 0
ROTATION 0
SAVE OFF
AV MODE 2
BALANCE 0
BLUE BACK OFF
AUTO SELECT ON
ITEMS DATA SETTING
FACTORYSET 5 FACTORYSET 6 FACTORYSET 7 FACTORYSET 8
R/C EA(H) EB(H) EC(H) ED(H)
S-SYSTEM ALL CH D/K ALL CH B/G ALL CH D/K #1(MCL)
LANGUAGE RUSSIAN MALAY FRENCH ENGLISH
SELECT
SERVICE ADJUSTMENT
PIF ADJUSTMENT CHECKING
3 PIF VCO COIL
ADJUSTMENT 1. Do not receive any signal. 2. Connect thedigital voltmeter to TP803 (pin (54)
of IC800) in the main unit.
3. Call the "PIF VCO" Mode at the service mode.
4. Verify that it is turned counterclockwise to 0V
and adjust T800 to make DC voltage ofTP803
become 2.5 ± 0.1V in the range.
DC voltage at TP803
Adjust T800 to B point, between B'
and B".
* Turn the coil counterclockwise for
the up direction and clockwise for
the down direction.
Fig. 1
Fig. 2
E-9 CH
P C
-1.5+/-0.8dB
10k
100k
1n60
75ohm
IF OUT
1000p
Oscilloscope
Fig. 3
Oscilloscope
BIAS Box
TV SET
Bias Box :about 4.5V
TP201
0.1~1.0V
+
–
+
–
5V
2.5V
Down BB"CUPB'A

9
CX68KF5
SX68KF7
9-1 9-2
No. Adjustment point Adjustment Condition / Procedure Waveform or others
1
2 SUB VOL
(BUS
ADJUSTMENT)
1. Receive the PAL Colour Bar signal.
Signal content: 400Hz 100% Mod.
2. Connect the probe of the meter (*) to (SI)
connector.
3. Select the SUB-VOL in the service mode.
4. Adjust the SUB-VOL data to make the meter
indicate 5.2 Vrms (at L-CH).
Adjustment value: 5.2 ± 0.3 Vrms
Note:
* SURROUND OFF
* AV MODE (STANDARD)
* S-NORMAL state
* S-VOL Max
* Bass + OFF
RF SUB
SOUND
(BUS
ADJUSTMENT)
(CX68KF5)
1. Receive the PAL B/G signal.
Audio signal: 400 Hz, 100% modulated
(50 kHz dev.)
2. Connect the oscilloscope to the Audio Out (L
or R) terminal. (Terminate with 10K ohm
impedance).
3. Call the "RF-S-SOUND" in service mode.
4. Increase or decrease "RF S-SOUND" by using
Volume UP/DOWN key, so that the 400Hz sine
wave be 1.76 ± 0.1Vp-p.
SOUND ADJUSTMENT
3 NOISE MUTE
CHECKING 1. Receive the PAL Colour Bar signal. 2. Turn up the volume control to maximum, make
sure the sound is heard from the speakers.
Then put the unit in no signal state.
3. Check the sound mute is effective.
4. Finally turn sound level of CTV to minimum.
No. Adjustment point Adjustment Condition / Procedure Waveform or others
1VCO COIL
T2300
(SX68KF7)
1. Receive the PAL Colour Bar signal.
(Set the receiving frequency atAFT OFF VHF
high frequency.)
2. Connect the digital voltmeter to TP2300 or pin
(1) of SC200 (in the main unit).
3. Verify that it is turned counterclockwise to 0V
and clockwise to 5V, and adjust T2300 to make
the DC voltage of TP2300 become 2.5 ± 0.1 V
in the range.
* Single-unit adjustment
Vcc 5 ± 0.1V
IF input frequency 38.9MHz ± 10kHz. Control it
under these conditions.
Adjust T2300 to make the DC voltage ofTP2300
(in the NICAM unit) become 2.5 ± 0.1V.
After single-unit adjustment, check the practical
setup.
Alignthe receivingfrequency to the select channel
frequency. (AFT OFF)
The checked voltage must be2.5 ± 1.0V.
(Take care that ± 1.0 is considered for the Vcc
difference between the single unit and unit, Fo
difference and so on, but is not the adjustment
precision.)
SIF(NICAM/IGR) ADJUSTMENT

10
10-1 10-2
CX68KF5
SX68KF7
No. Adjustment point Adjustment Condition / Procedure Waveform or others
1PURITY
ADJUSTMENT 1. Receive the GREEN -ONLY signal and set the beam current to 1.6mA with the contrast
control.
2. Degauss the CRT enough with the degaussing
coil.
Note: Follow the job instruction sheet to adjust
the magnetic field.
*BH = 0
*Bv = refer to the job intructions sheet.
Adjustable magnetic field is shown in page 7.
3. Maintain the purity magnet at the zero
magneticfield and keep the static convergence
roughly adjusted.
With P-Mag, adjust it to the center: rank A.
4. Observe the points a, b, as shown in Fig.4-1
through the microscope. Adjust the landings
to A rank requirement.
5. If the a/b balance is poor, compensate it to the
center "Rank AB".
6. Orient the raster rotation to 0 eastward.
7. Tighten up the deflection coil screws.
Tightening torque : 108 ± 20N (11 ± 2Kgf)
8. Make sure the CRT corners landing meet the
A rank requirements. If not, stick the magnet
sheet to correct it.
Note: Apply the adjustment after aging with the
beam current 1,600 ± 50µA or more for
30 minutes or more.
Note: Select the service mode, and press the
monocolour key of R/C for process, and
the monocolour screen (green) will be
selected.
* For the following colours press R/C RGB key
to change.
PURITY ADJUSTMENT
* Continuosly press the
monocolour key a second or
more, and the monocolour mode
will be selected without the
service mode.
Even with TEXT key or "R.G.Cy"
key, it can be directly switched to
each monocolour screen.
Fig. 4-1
Fig. 4-2 Rank A (On the right of CRT)
Fig. 4-3 Rank A (On the left of CRT)
a
AA=B
B
AA=B
B
b
90 mm 90 mm
GREEN
ONLY BLUE
ONLY
Single-colour
screen cleared
RED
ONLY
* Adjustment for uniformity is change to another
content. Please refer to the following page.
No. Adjustment point Adjustment Condition / Procedure Waveform or others
1Uniformity
adjustment (To
perform after
the purity and
convergence
adjustment)
Before adjustment begin, Horizontal magnetic
field=0G, Vertical magnetic field = Each
destination adjustment magnetic field.
Make sure degauss it.
North Direction Red Uniformity
1. Horizontal mf = Set to monocolour screen Red
and adjust to +0.25G.
2. Pay attention to the edge of CRT, if the landing
is poor, adjust by attaching the compensation
magnet at the back of CRT. Refer to Fig.5.
South Direction Red Uniformity
1. Horizontal mf = Set to monocolour screen Red
and adjust to -0.25G.
2. Pay attention to the edge of CRT, if the landing
is poor, adjust by attaching the compensation
magnet at the back of CRT.
The same method is applied for adjustment of
monocolour screen Blue for blue uniformity, and
changing both the magnetic field for north and
south direction.
* During the pasting of compensation magent,
use the crosshatch pattern signal.
Make sure there is no blur or bend lines occur.
If the blur or bend lines are serious, adjust the
location of compensation magnet to make it
better.
UNIFORMITY ADJUSTMENT
Miss landing
(CRT surface)
(CRT back) Compensation magnet
Fig.5

11
CX68KF5
SX68KF7
11-1 11-2
No. Adjustment point Adjustment Condition / Procedure Waveform or others
CONVERGENCE ADJUSTMENT
1 CONVERGENCE
ADJ (To be
done after the
purity
adjustment.)
(1)Receive the Crosshatch pattern signal.
(2)Using the remote controller, call NORMAL
mode.
Static Convergence Adjustment
1. Overlap blue and red with the open-/closing
angle and rotation of the 4 pole magnet.
2. Overlap green on blue and red with the open-
/closing angle and rotation of the 6 pole
magnet.
Dynamic Convergence Adjustment
1. Fix the wedges in a position so that the
deflection yoke neck is at the center of top
bottom and left right. (Straight line and without
any blur horizontal / vertical line)
2. Adjust the Red, Blue, upper and lower of the
center y axis on the screen by using the
Volume (YH,YHC) at the deflection yoke.
Refer to Fig. 6-2 and Fig. 6-3
3. If the Horizontal Red. Blue (XV) on the screen
center X axis is shifted, correct the Red. Blue
(XV) by adjusting the balance coil on the
deflection yoke.
Refer to Fig.6-4.
4. After confirm that there is no problems on the
entire screen, bond wedge on CRT and glass
tape on it. Fastening the screws of DY and
magnet unit (purity, 4-pole and 6 pole), then
coat the lacquer paint on DY fastening screw
and magnet unit fastening screw.
Note:In case of poor convergence adjustment
on the top and bottom of the screen, adjust
DY by swing rightward and leftward.
Refer to Fig.6-1
Fig. 6-1
Adjust by swing DY
Note:For CRT drawing, please refer to following
page.
X axis
Y axis
BRRB
Fig. 6-2
Adjust by YHC
BRRB
Fig. 6-3
Adjust by YH
B
Fig. 6-4
Adjust by Balance Coil
CRT Neck
Lacquer
Purity Magnet
Balance Coil
YHC
YH
4-Pole Magnet
6-Pole Magnet
25 ±0.5mm
No. Adjustment point Adjustment Condition / Procedure Waveform or others
1Dynamic
focus
adjustment
L1680
(in the power
unit)
FOCUS ADJUSTMENT
1. Receive the Monoscope pattern signal.
2. With the remote controller, make it normal.
3. Connect the oscilloscope to the pin (8) of
T1680.
4. Turning L1680, adjust the amplitude of the
horizontal frequency waveform to 1,000Vp-p. Approx. 1,000Vp-p
1,000 ±20Vp-p
V-FREQ
1. Receive the Monoscope pattern signal.
2. With the remote controller, make it normal.
3. Adjust the focus VR-1(F1) to make the
horizontal line around "575" on the bottom left
of the screen as fine as possible.
4. Adjust the focus VR-2(F2) to make the vertical
line around "575" on the bottom left of the
screen as fine as possible.
5. Repeat item 3 once again to adjust the focus.
Focus
adjustment
FBT Focus VR

12
12-1 12-2
CX68KF5
SX68KF7
No. Adjustment point Adjustment Condition / Procedure Waveform or others
1
2 WHITE
BALANCE
BACKGROUND
I2C BUS
ADJUSTMENT
(RF SIGNAL)
1. Receive the Monoscope pattern signal.
2. Select P-NORM with the remote controller.
3. Connect the beam ammeter between TP1601
and TP1602.
4. Coarsely adjust the beam current to approx.
1.8mA with R1633 (Sub-Contrast VR)
5. Receive the window pattern signal with AV
input.
(PAL burst is generated with the signal
generator.)
6. With the data of G-drive and B-drive, adjust
the colour temperature 17,000°K or 18,000°K
of the white peak to white.
7. Adjust the right dark area of the window to
17,000°K or 18,000°K with R-cut off, G-cut off
and B-cut off.
8. Readjust the colour temperature at the white
peak.
9. Check 17,000°K or 18,000°K at the low white.
Note : Apply this adjustment after aging with the
beam current 1,600 ± 50µA or more for
30 min or more.
(On the white or green monocolour
screen.)
* The colour temperature is based on the
shipment initial setting table.
Note1:
R CUT OFFUP "1" KEY
DOWN "4" KEY
G CUT OFFUP "2" KEY
DOWN "5" KEY
B CUT OFF UP "3" KEY
DOWN "6" KEY
Data up/down is possible with the
above comparison.
* 17,000°K X : 0.261
Y : 0.261
18,000°K X : 0.255
Y : 0.255
(With Monolta colour thermometer
CA-100)
Note2:
G-DRIVE UP "7" KEY
DOWN " " KEY
B-DRIVE UP "8" KEY
DOWN "0" KEY
Data up/down is possible with the
above comparison.
CRT CUTOFF
ADJUSTMENT
(I2C BUS
CONTROL)
1. Receive the Monoscope pattern signal.
2. Select P-NORM with the remote controller.
3. Select the CUT OFF BKGD mode at the
service mode.
4. Select the screen VR 0/10.
5. Press "-/--" key of the remote controllerto select
the lateral in-line mode.
6. Turn the screen VR clockwise, and adjust the
first lighting lateral in-line raster to slightly light.
7. Adjust the CUT OFF data of two other colours,
and coarsely adjust the lateral in-line to
become white. (Note 1)
8. Turn the screen VR in the opposite direction
to the point where the lateral in-line raster goes
out.
Note 1: Apply the adjustment after aging with
the beam current 1,600 ± 50µA or
more for 30 min or more.
9. Press "-/--" key of the remote controllerto select
the normal mode.
CUT OFF, BKGD, SUB-CONT ADJUSTMENT
On the monocolour screen of white
or green.
3 WHITE
BALANCE
BACKGROUND
(CUT OFF DVD
BKGD)
I2C BUS
ADJUSTMENT
(DVD SIGNAL)
1. Receive the window pattern with DVD signal
(component signal).
2. Apply the adjustment in the same manner as
2 (5) and the subsequence above. (17,000°K
or 18,000°K) (G-DRIVE, B-DRIVE, R-CUT
OFF, G-CUT OFF, B-CUT OFF)
Apply the adjustment after the end of 2.
Note : Use the window pattern of
the signal generator for
adjustment.
(PAL,colourburst is generated with
signal generator)
No. Adjustment point Adjustment Condition / Procedure Waveform or others
4MAX BEAM
R1759 1. Receive the Monoscope pattern signal with standard mode.
2. Make the image normal with the remote
controller.
3. Connect the beam ammeter between TP1601
and TP1602.
Ammeter full scale-3mA range
Connect the - side of the ammeter to TP1602.
Connect the + side of the ammeter to TP1601.
4. Adjust the beam current to 1.8mA ± 20µA with
R1759 (sub-contrast VR).
Note: Apply the adjustment after aging with the
beam current 1,600 ± 50µA or more for 30
min or more.
(On the white or green monocolour screen.)
5 SUB-
CONTRAST
(SUB-CONT)
I2C BUS
ADJUSTMENT
(RF SIGNAL)
1. Receive the window pattern signal with AV
input.
2. Make the image normal with the remote
controller.
3. Select the SUB-CONTRAST adjustment mode
with the remote controller, and adjust 50%
white to 165 ± 10 cd.
Note:
Use "Y" of Minolta colour
analyzer CA-100 in adjustment.
CUT OFF, BKGD, SUB-CONT ADJUSTMENT
6 SUB-
CONTRAST
(SUB-CONT
DVD)
I2C bus
adjustment
(DVD Signal)
1. Select the DVD mode.
2. Receive thesignal ofthe DVDsignal generator.
(Component signal) (Window pattern)
3. Make the picture normal with the remote
controller.
4. Select the SUB-CONTRAST adjustment mode
(DVD) with the remote controller, and adjust
50% white to 165 ± 10 cd.
Note:
Use the PAL window pattern of
the signal generator for
adjustment.
(PAL and colour burst are
provided.)
Note:
Window pattern
50%white for SUB-CONT
Dark white for
SUB-BRIGHT

13
CX68KF5
SX68KF7
13-1 13-2
No. Adjustment point Adjustment Condition / Procedure Waveform or others
1V-AMP 50
V-LINE 50
V-S CORR50
V-CENT50
H-CENT50
H-SIZE50
E/W-PAR50
EW-COR50
TRAPE50
V-ENT
H-ENT
OTHER
Adjust the overscan to 8.5% (E-5)
Adjust the linearity to the best. (E-2)
Already preset (**). (Adjust this unless the linearity
is achieved.) (E-2)
Align the center of the screen to the geometric
center of CRT. (E-5)
Align the center of the screen to the geometric
center of CRT. (E-5)
Adjust the overscan to 8.5% (E-5)
Adjust the 2nd vertical line from the left end of
crosshatch pattern so that the middle 4 blocks
are straight. (E-2) (refer to Fig.7-1)
Adjust the 2nd vertical line from the left end of
crosshatch pattern so that the top are straight.(E-
2) (Refer to Fig.7-2)
Adjust the 2nd vertical line from the left end of
crosshatch pattern so that the D1 (centre area of
the first vertical line-edge of screen) and D2 (top
area of the first vertical line-edge of screen) are
same. (Refer to Fig.7-3)
Already preset.(**)
Already preset.(**)
On the items of V-AMP60, V-LINE60, V-S
CORR60, V-CENT60, H-CENT60, H-SIZE60,
EW-PAR60, EW-COR60 andTRAPE60, the
compensation data is automatically input if the
50Hz mode adjustment is done.
Attention:
Don't change 50 Hz mode data after adjust
60 Hz mode data. Because 60 Hz mode
data follow 50 Hz mode data automatically.
HORIZONTAL, VERTICAL, DEFLECTION LOOP AND ADJUSTMENT
The receiving channel in ( ) are the
following signals.
(E-2) : Crosshatch (50Hz)
(E-5) : Monoscope (50Hz)
However, if it is largely deviated
when it is checked in the 60Hz
mode,readjust it in the 60Hz mode.
No. Adjustment point Adjustment Condition / Procedure Waveform or others
8 SUB-
BRIGHTNESS
(SUB BRI
DVD)
I2C bus
adjustment
(DVD SIGNAL)
1. Select the DVD mode.
2. Receive thesignal ofthe DVDsignal generator.
(Component signal) (Window pattern)
3. Make the picture normal with the remote
controller.
4. Select the SUB-BRIGHT adjustment mode
(DVD) with the remote controller, and adjust
the right dark white area of window pattern to
5.5 ± 0.5 cd of window pattern.
CUT OFF, BKGD, SUB-CONT ADJUSTMENT
D1
D2
Fig.7-1
Fig.7-2
Fig.7-3
7 SUB-
BRIGHTNESS
ADJUSMENT
(SUB BRI)
(I2C BUS
CONTROL)
(RF SIGNAL)
1. Receive the window pattern signal with AV
input.
2. Make the image normal with the remote
controller.
3. Select the sub-bright adjustment mode with the
remote controller, and adjust the right dark
white area of the window pattern to 5.5 ± 0.5
cd.
* Receive the Crosshatch pattern
or equivalent signal.
1. Make the image normal with the
remote controller.
2. Adjust the 3rd (1 thru 5 from the
left) black of the window pattern
to sink.
CUT OFF POINT

14
14-1 14-2
CX68KF5
SX68KF7
No. Adjustment point Adjustment Condition / Procedure Waveform or others
1SUB COLOUR
(I2C BUS
CONTROL)
(RF signal)
1. Receive the the PAL Colour Bar signal.
2. Make the picture normal with the remote
controller.
3. Connect the oscilloscope to TP802 (pin (4) of
KY) (Use Probe10:1)
Range : 2V/Div
Sweep time : 20µ sec/Div
4. Set the "SUB-COL" adjustment mode with the
remote controller, and vary the sub colour data
to make 75% W of the PALcolour bar and RED
at the same level for adjustment shown in Fig.
8.
PAL CHROMA ADJUSTMENT No.
Adjustment point Adjustment Condition / Procedure Waveform or others
1SUB-TINT
(SUB TINT)
(I2C BUS
CONTROL)
1. Select the sub-tint adjustment mode(automatic
Y cut) to receive the NTSC colour bar signal
withAV input.
2. Connect the oscilloscope to TP801.
Range : 50mV/Div (AC)
(Use Probe 10:1)
Sweep time : 10µsec/Div
3. Vary the sub tint data to adjust the waveform
to be gained as shown in Fig 10.
TP801………………(KY) 6 pin
NTSC CHROMA ADJUSTMENT
Cy G B
Y
100%W
75%W
Mg R
Fig. 8
2SUB-COLOUR
(SUB COL
DVD)
I2C bus
adjustment
(DVD signal)
1. Receive the DVD (half colour bar) signal.
2. Make the picture normal with the remote
controller.
3. Connect the oscilloscope to TP802 (pin (4) of
KY). (10:1 probe is used.)
Range : 2V/Div.
Sweep time : 20µsec/Div.
4. Set the"SUB COL DVD" adjustment mode with
the remote controller, and vary the sub colour
data to make 100%W of the colour bar and
RED at the same level for adjustment shown
in Fig. 9.
(Use the colour bar pattern of the signal generator
for adjustment.)
Cy GBR
YW
100%W
Mg
R
Fig. 9
A
B
C
WY Cy G MgR B Blk
Fig.10
A=B=C
2SUB-TINT
(SUB TINT
DVD)
I2C bus
adjustment
(DVD Signal)
1. Select the "SUB-TINT DVD" adjustment mode
(automatic Y cut) to receive the DVD colour
bar signal.
2. Connect the oscilloscope to TP801.
Range :50m/V/Div. (AC)
Sweep time : 10µsec/Div. (use Probe 10:1)
3. Vary the sub tint data to adjust the waveform
to be gained as shown in Fig.10.
4. Release/off the adjustment mode.
TP801 .........................(KY) 6pin
(Usethe colour barpattern of thesignal generator
for adjustment)

15
CX68KF5
SX68KF7
15-1 15-2
No. Adjustment point Adjustment Condition / Procedure Waveform or others
1
2 COLOUR Key 1. Receive the Colour Bar signal.
2. Press to Menu mode, then select Picture Mode
and set to select COLOUR.
3. Press Volume Up/Down key to check whether
the COLOUR effect is OK or not.
CONTRAST
Key 1. Receive the Monoscope Pattern signal. 2. Press to Menu mode, then select Picture Mode
and set to select CONTRAST.
3. Press Volume Up/Down key to check whether
the CONTRAST effect is OK or not.
FUNCTION OPERATION CHECKING (1) (VIDEO & AUDIO) No.
Adjustment point Adjustment Condition / Procedure Waveform or others
8
FUNCTION OPERATION CHECKING (2) (VIDEO & AUDIO)
3 BRIGHTNESS
Key 1. Receive the Monoscope Pattern signal. 2. Press to Menu mode, then select Picture Mode
and set to select BRIGHTNESS.
3. Press Volume Up/Down key to check whether
the BRIGHTNESS effect is OK or not.
4 TINT Key 1. Receive the NTSC Colour Bar signal thruAV
input.
2. Press to Menu mode, then select Picture Mode
and set to select TINT.
3. Press Volume Up/Down key to check TINT, UP
for GREEN direction and DOWN for RED
direction whether is OK or not.
5 SHARPNESS
Key 1. Receive the Monoscope Pattern signal. 2. Press to Menu mode, then select Picture Mode
and set to select SHARPNESS.
3. Press Volume Up/Down key to check whether
the SHARPNESS effect is OK or not.
6 NORMAL Key 1. Once in PICTURE Mode, and the NORMAL
key is pressed, all the settings will be present
to normal setting.
(Normal setting value for every mode, refer on
page 8.)
Note:
If nothing is display mean contrast,
colour, brightness, tint, sharpness
are all in normal setting.
7 WHITE TEMP 1. Receive the Monoscope Pattern signal.
2. Set FUNCTION to select WHITE TEMP.
3. Press Volume Up/Down key to check WHITE
TEMP Option, STANDARD: NORMAL
SETTING, WARM for more REDDISH
direction changing, COOL for more BLUISH
direction changing.
HEADPHONE
OUTPUT
CHECKING
1. Receive the PALColour Bar signal with sound
400 Hz, 100% modulation (± 50kHz Dev)
2. Maximum volume, and check the headphone
output with 400 Hz sound and no sound out
from speaker.
(Ref:Output Levelof Headphoneis asFollowing:)
SUB-VOLAdj. H/P Output (Open)
63 1.0 Vp-p
40 500 mVp-p
No. Checking Item Adjustment Condition / Procedure Waveform or others
1
PROTECTOR OPERATION CHECK
H.V Protector 1. Receive the Monoscope pattern signal.
2. Connect the bias box to the cathode side
(R1662 side) of D1621.
3. Set the voltage of the bias box at 15V, and
verify that the protector does not operate.
4. Set the voltage of the bias box at 24V, and
verify that the protector does operate.
2 Other
protectors Correspondence for short circiut of smoothening electrolysis of +B line and so on.
To check the operation of the protector and so
on, take care for the breakage, deterioration and
so on of each element.
Reference Approx. 17.7 V as
ordinary.

16
16-1 16-2
CX68KF5
SX68KF7
TROUBLE SHOOTING TABLE TROUBLE SHOOTING TABLE (Continued)
Check the voltage at pin (6) of IC1501.
NOVERTICAL SCAN
Check IC1501 and
related circuits.
Normal Abnormal
Normal
Check IC800 and its
peripheral parts.
Check vertical trigger pulse at pin (26) of IC800. Check D1576 and R1576.
Abnormal
Does D1200 (Power LED) turn on?
D1200 (Power LED) turn on and off.
NO RASTER
Normal
Check CRT connector (KY), (H) bias. Is pin (10) of IC700 in "L" level ?
Abnormal
Check IC850.
Check
protecter circuit
and its related
parts pin (2) of
IC1000 vertical
pulse.
Check the
power circuit
consisting of
IC700, Q700
IC750 and
IC602.
Yes
Yes (RED)
Yes
(Bus error) No
See many often
D1200 flashes
in red.
This indicates
which IC to
check up.
No
No
A
Does horizontal circuit
momentary oscillate?
Check R1651,
IC800 and their
peripheral parts.

17
CX68KF5
SX68KF7
17-1 17-2
TROUBLE SHOOTING TABLE(Continued) TROUBLE SHOOTING TABLE (Continued)
Check the
peripheral circuit
of IC1700,
IC1002, IC1701
and D1751.
Check the power circuit
consisting of T700, IC700,
Q700 and peripheral parts.
Normal
Check F3700.
Replace the Fuse.
Is the Fuse again blown out?
Does 5V appear at pin (22) of IC1000?
Blown out
No
No Yes
Yes
Check IC1000,
IC1002, Q1002,
Q752 and
Q753.
Check F3700.
NO LED LIGHT
E
2
PROM
(IC1001)
V/C/D
(IC800)
Tuner
(TU200)
S-CONTROL
(IC1300)
AV-SWITCH
(IC400)
Other
TEXT
(IC1800)
NICAM/IGR
(IC2300)
500 500 2000 (ms)
2000 (ms)500 500
2000 (ms)500 500
2000 (ms)500 500
2000 (ms)500 500
2000 (ms)500 500
2000 (ms)
500 500
2000 (ms)
500 500
Bus-Err
Bus-Err
Bus-Err
Bus-Err
Bus-Err
Bus-Err
Bus-Err
Bus-Err
A

18
18-1 18-2
CX68KF5
SX68KF7
TROUBLE SHOOTING TABLE(Continued) TROUBLE SHOOTING TABLE (Continued)
Check TU200, TP201 and etc.
NO PICTURE
Does the snow noise appear
on the picture tube at max
contrast and brightness
control?
B
Snow noise increase.
Does 5V appear at pins (6) and (7)
of TU200 (TUNER)? Check IC600, L200,TU200 and etc.
No
Does 31V appear at pin (9) of
TU200? Check IC1751, L201 and etc.
Yes
Yes
No
Yes
No
Normal
No snow noise.
Check pins (6) and (7) of IC800.
Abnormal
B
Noise or signal
appear.
Is AV1, AV2 or AV3
input normal? Check Q455 and its
peripheral circuit.
CheckTU200, SF200 and
their related parts.
Yes
No
Which does pin (43) of
IC400 appear, noise or
signal?
Which does pin (39) of
IC800 appear, noise or
signal?
Check IC400 and its
peripheral circuit.
Noise
Signal
Check IC400, Q401
and their peripheral
circuit.
Is IC800 RGB
out Normal?
Check IC800 and
its peripheral
circuit.
Check the
peripheral circuits
of screen heater
(FBT) and the CRT.
Check IC850 and
its peripheral
circuit.
Noise
Are waveform at pins (7), (8)
and (9) of IC850 normal?
Yes
Signal
No Yes No

19
CX68KF5
SX68KF7
19-1 19-2
TROUBLE SHOOTING TABLE(Continued) TROUBLE SHOOTING TABLE (Continued)
No Yes
YesNo
Is there audio
signal at pins
(46) and (48)
of IC400?
Check IC400
and its
peripheral
circuit.
Check TU200
and its
peripheral parts.
Check TU200
and its
peripheral
circuits of no
problem, set
the sound
system
inpositon.
NO NORMAL SOUND
Is audio output terminal J400
normal ?
Yes
YesNo
No
Check TV sound. Is there audio signal at pins (3) and (22)
of IC300?
Change the sound system.
Is sound normal?
Is there audio
signal at pins (2)
and (5) of IC1300?
No
No
Yes
Check IC300.
Yes
Check IC1300 and
its peripheral
parts.
Set S-Volume at
maximum.
Do pins (12), (15)
of IC300 work?
Check IC301 and
its peripheral
circuit.
NoYes
Yes
Yes
No
Turn on colour control. Does
colour appear?
NO SPECIFIC COLOUR
C
Is only RF signal's colour abnormal?
Set the colour
control.
Turn on colour system forced
switch.Does colour appear?
Fix cotrol to
coloured
system.
Check TU200,
Q455, IC400 and
their peripherals.
Yes
Yes
Yes
No
No
Is chroma input level at pin (43)
of IC800 proper?
Check Q400
and its
peripheral circuit.
Check D1664
and its
peripheral circuit.
Are signal waveforms at TP801
and TP802 proper?
Is SCP signal waveform at pin (30) of
IC800 proper?
No
NO COLOUR
Check IC850.
Check IC800 and
its peripheral circuit.
No
PAL, SECAM,
NTSC4.43:
Check X800, pin
(12) of IC800 and
their peripheral circuit.
SX68KF7 only
Check IGR
unit and
peripheral
circuit.
Check IC400
and its
peripheral
parts.

20
20-1 20-2
CX68KF5
SX68KF7
TROUBLE SHOOTING TABLE(Continued)
SET Sub-
colour.
Check IC800
and its
peripherals.
C
COLOUR PRODUCED
Colour in B/W mode. Colour control circuit detective. Colour saturation control does not
work. Fix control to coloured system.
Turn colour control to minimum.
Does colour disappear?
Turn up and down colour control.
Does colour gain go up and
down?
Can the sub-colour be readjusted
in service mode?
Turn on colour system forced
switch.Does colour appear?
APG circuit:
Check IC800
and its
peripherals.
Yes Yes
White
balance:
Check RGB
output circuit
of IC800.
Check IC800.
No
Yes No
Check D1664 and its
peripherals.
PAL, SECAM, NTSC4.43:
Check X800, pin (12) of IC800 and
their peripherals.
No
No
Is chroma input level at pin (43) of
IC800 proper?
Ref.value: 100 ~ 500mVp-p.
Yes
Fix control to
coloured system.
No
Is SCP signal waveform at pin
(30) of IC800 proper?
Are signal waveforms at TP801 and TP802
proper?
Yes
Yes
Check Q400 and its
peripherals.
No
NoYes
Check IC800.